Automatica, Vol.38, No.9, 1575-1581, 2002
Bandwidth vs. gains design of H-infinity tracking controllers for current-fed induction motors
This paper describes a systematic procedure for designing speed and rotor flux norm tracking H. controllers with unknown load torque disturbances for current-fed induction motors. A new effective design tool is developed to allow selection of the control gains so as to adjust the disturbances' rejection capability of the controllers in the face of the bandwidth requirements of the closed-loop system. Application of the proposed design procedure is demonstrated in a case study, and the results of numerical simulations illustrate the satisfactory performance achievable even in presence of rotor resistance uncertainty.